First report of<i>Thielaviopsis paradoxa</i>causing palm fruit rot of<i>Butia capitata</i>in Uruguay

Gepp, V.; Hernández, L.; Alaniz, Sandra; Záccari, Fernanda

doi:10.5197/j.2044-0588.2013.027.012

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…To elucidate the nature and pathogenicity of the potential pathogen, we inoculated tissue-cultured greenhouse-grown date palm plants with the three isolates of the pathogen. Our data were very similar to the data obtained from previous pathogenicity studies of T. paradoxa on Dracaena marginata [ 35 ], Butia capitate [ 36 ], Hyophorbe lagenicaulis [ 37 ], and Cocos nucifera [ 38 ]. Hence, based upon the morphology and sporulation characteristics, it is difficult to distinguish both Thielaviopsis spp., and a DNA-based molecular characterization of the most conserved regions of these fungal pathogens can be an alternative species-specific detection method for black scorch disease in date palm.…”

Section: Discussionsupporting

confidence: 90%

Characterization and Control of Thielaviopsis punctulata on Date Palm in Saudi Arabia

Alhudaib

El-Ganainy

Almaghasla

et al. 2022

Plants

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Date palm (Phoenix dactylifera L.) is the most important edible fruit crop in Saudi Arabia. Date palm cultivation and productivity are severely affected by various fungal diseases in date palm-producing countries. In recent years, black scorch disease has emerged as a devastating disease affecting date palm cultivation in the Arabian Peninsula. In the current survey, leaves and root samples were collected from deteriorated date palm trees showing variable symptoms of neck bending, leaf drying, tissue necrosis, wilting, and mortality of the entire tree in the Al-Ahsa region of Saudi Arabia. During microscopic examination, the fungus isolates growing on potato dextrose agar (PDA) media produced thick-walled chlamydospores and endoconidia. The morphological characterization confirmed the presence of Thielaviopsis punctulata in the date palm plant samples as the potential agent of black scorch disease. The results were further confirmed by polymerase chain reaction (PCR), sequencing, and phylogenetic dendrograms of partial regions of the ITS, TEF1-α, and β-tubulin genes. The nucleotide sequence comparison showed that the T. punctulata isolates were 99.9–100% identical to each other and to the T. punctulata isolate identified from Iraq-infecting date palm trees. The pathogenicity of the three selected T. punctulata isolates was also confirmed on date palm plants of Khalas cultivar. The morphological, molecular, and pathogenicity results confirmed that T. punctulata causes black scorch disease in symptomatic date palm plants in Saudi Arabia. Furthermore, seven commercially available fungicides were also tested for their potential efficacy to control black scorch disease. The in vitro application of the three fungicides Aliette, Score, and Tachigazole reduced the fungal growth zone by 86–100%, respectively, whereas the in vivo studies determined that the fungicides Aliette and Score significantly impeded the mycelial progression of T. punctulata with 40% and 73% efficiency, respectively. These fungicides can be used in integrated disease management (IDM) strategies to curb black scorch disease.

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Section: Discussionsupporting

confidence: 90%

Characterization and Control of Thielaviopsis punctulata on Date Palm in Saudi Arabia

Alhudaib

El-Ganainy

Almaghasla

et al. 2022

Plants

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“…Estos rasgos son característicos de T. paradoxa según descripción de clave taxonómica de WATANABE (1937) y estudios realizados por HERNÁNDEZ et al, (2011) en el cultivo de piña, demostrando presencia de T. paradoxa en cultivos de piña en el municipio de San Marcos Sucre. Además, cabe anotar que T. paradoxa ha sido reportada en una gran diversidad de plantas, entre ellas Butia capitata (GEPP et al, 2013) y Dracaena marginata (FIGUEREDO et al, 2012).…”

Section: Resultados Y Discusiónunclassified

Presencia del hongo Thielaviopsis paradoxa causante de pudrición negra de la piña oro miel en el departamento de Sucre

Perez

Chamorro

Romero

2014

Rev Colombiana Cienc Anim

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En el presente trabajo, consistió en la identificación y confirmación de la presencia del hongo Thielaviopsis paradoxa, causante de la pudrición negra del fruto de piña oro miel en el departamento de Sucre. Se colectaron frutos de piñas con síntomas característicos en diferentes zonas productoras del departamento de Sucre. Las muestras se transportaron al laboratorio de investigaciones microbiológicas de la Universidad de Sucre, donde se hizo aislamiento del hongo en medio PDA (Agar Papa Dextrosa) durante 7 días a 25ºC, 12h de luz / oscuridad, seguido de la preparación de microcultivo e identificación morfológica del hongo mediante microscopia óptica, determinando estructuras reproductivas características del hongo y comprobación mediante criterios taxonómicos establecidos. A la fecha es el primer reporte que tiene de este hongo como agente causal de la pudrición negra del fruto de la variedad de piña oro miel producida en el departamento de Sucre.

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Ceratocystis paradoxa (black rot of pineapple)

2021

CABI Compendium

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First report ofThielaviopsis paradoxacausing palm fruit rot ofButia capitatain Uruguay

Cited by 4 publications

References 4 publications

Characterization and Control of Thielaviopsis punctulata on Date Palm in Saudi Arabia

Characterization and Control of Thielaviopsis punctulata on Date Palm in Saudi Arabia

Presencia del hongo Thielaviopsis paradoxa causante de pudrición negra de la piña oro miel en el departamento de Sucre

Ceratocystis paradoxa (black rot of pineapple)

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